{"version":"1.0","provider_name":"Visual Paradigm Product Updates Vietnamese","provider_url":"https:\/\/updates.visual-paradigm.com\/vn","author_name":"jick","author_url":"https:\/\/updates.visual-paradigm.com\/vn\/author\/jick\/","title":"M\u1eadt kh\u1ea9u l\u00e0 bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt ch\u00ednh \u0111\u1ec3 ng\u0103n ch\u1eb7n truy c\u1eadp tr\u00e1i ph\u00e9p v\u00e0o t\u00e0i li\u1ec7u PDF. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u01b0 m\u1ed9t kh\u00f3a \u0111\u1ec3 m\u00e3 h\u00f3a v\u00e0 gi\u1ea3i m\u00e3 th\u00f4ng tin.","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"puc5kq1hME\"><a href=\"https:\/\/updates.visual-paradigm.com\/vn\/releases\/how-to-protect-a-pdf-with-password\/\">L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 b\u1ea3o v\u1ec7 t\u00e0i li\u1ec7u PDF b\u1eb1ng m\u1eadt kh\u1ea9u<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/updates.visual-paradigm.com\/vn\/releases\/how-to-protect-a-pdf-with-password\/embed\/#?secret=puc5kq1hME\" width=\"600\" height=\"338\" title=\"&#8220;L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 b\u1ea3o v\u1ec7 t\u00e0i li\u1ec7u PDF b\u1eb1ng m\u1eadt kh\u1ea9u&#8221; &#8212; Visual Paradigm Product Updates Vietnamese\" data-secret=\"puc5kq1hME\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/updates.visual-paradigm.com\/vn\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","thumbnail_url":"https:\/\/updates.visual-paradigm.com\/vn\/wp-content\/uploads\/sites\/10\/2026\/03\/img_69a8efee28c4a.png","thumbnail_width":971,"thumbnail_height":574,"description":"Passwords are the primary security measure to prevent unauthorized access to PDF documents. It is used as a key to encrypt and decrypt information."}